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A three-phase, wye-connected, cylindrical-rotor, synchronous motor, with negligible armature resistance and a synchronous reactance of 1.27 Ω per phase, is connected in parallel with a three phase, wye-connected load taking 50 A at 0.707 lagging power factor from a three-phase, 220-V, 60-Hz source. If the power developed by the motor is 33 kW at a power angle of 30°, determine:
(a) The overall power factor of the motor and the load.
(b) The reactive power of the motor.
Styrene can be made by catalytic dehydrogenation of ethyl benzene. The reaction is usually carried out in the presence of steam, which acts as a heat carrier and reduces coking on the catalyst.
List two reasons why water is seldom used as a solvent in sample preparation for infrared spectroscopy.
1 kg of liquid water, initially at 40 °C, 2 bar, is heated under constant pressure. If the amount of heat added is 1200 kJ, determine the final temperature and the phase of the system in the final state (if vapor-liquid mixture, report the mass fr..
Find the total line current drawn by the motor when the developed torque is one-half the rated value.
One mol of n-butane and 1 mol of n-pentane are charged into a container. The container is heated to 180oF where the pressure read 100 psia. Determine the quantities and compositions of the phases in the container.
Compute the effective armature ac resistance in per unit and in ohms per phase at 25°C.
A mixture containing 98 mol% methanol and 2 mol% of an inert contaminant is available as a feed to a formaldehyde plant. The fresh feed to a process consists of 1000 kmol/h of this mixture along with 200 kmol/h of oxygen. All of the oxygen is consume..
Extract ore descriptors or features from the variables and design a model that can classify the ores correctly from images of the ore
Solid NH4NO3 (ammonium nitrate) decomposes on heating to 400°C, forming N2O gas and water vapor, H2O. (a)Write a balanced chemical equation
What is the total amount owed at the end of the 10 years if no intermediate payments are made?
Compute the power factor for zero voltage regulation on full load.
Under what circumstances and for what kinds of disabilities would the CLI be superior to or be preferred over the GUI?
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